IX/50 XMM-Newton Serendipitous Source Catalogue 3XMM-DR6 (XMM-SSC, 2016)
The XMM-Newton serendipitous survey.
VII. The third XMM-Newton serendipitous source catalogue.
Rosen S.R., Webb N.A., Watson, M.G., Ballet J., Barret D., Braito V.,
Carrera F.J., Ceballos M.T., Coriat M., Della Ceca R., Denkinson G.,
Esquej P., Farrell S.A., Freyberg M., Grise F., Guillout P., Heil L.,
Law-Green D., Lamer G., Lin D., Martino R., Michel L., Motch C.,
Nebot Gomez-Moran A., Page C.G., Page K., Page M., Pakull M.W., Pye J.,
Read A., Rodriguez P., Sakano M., Saxton R., Schwope A., Scott A.E.,
Sturm R., Traulsen I., Yershov V., Zolotukhin I.
<XMM-SSC, Leicester, UK; Astron. Astrophys. 590, A1 (2016)>
=2016yCat.9050....0R 2016yCat.9050....0R
=2016A&A...590A...1R 2016A&A...590A...1R
ADC_Keywords: X-ray sources ; Surveys
Mission_Name: XMM
Keywords: catalogs - astronomical data bases - surveys - X-rays: general
Description:
The 3XMM-DR6 catalogue contains source detections drawn from 9160
XMM-Newton EPIC observations, covering an energy interval from 0.2keV
to 12keV. These observations were made between 2000 February 3 and
2015 June 4 and all datasets were publicly available by 2016 January
31, but not all public observations are included in this catalogue
(see below for more information).
Should you use the catalogue for your research and publish the
results, please use the acknowledgement below and cite the paper
describing 3XMM (Rosen, Webb, Watson et al., 2016A&A...590A...1R 2016A&A...590A...1R).
This research has made use of data obtained from the 3XMM XMM-Newton
serendipitous source catalogue compiled by the 10 institutes of the
XMM-Newton Survey Science Centre selected by ESA.
The following table gives an overview of the statistics of the
catalogue in comparison with the 3XMM-DR4 catalogue.
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3XMM-DR6 3XMM-DR5 Increment
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Number of observations 9160 7781 1379
Number of 'clean' observations
(i.e., observation class < 3) 5947 4735 1212
Observing interval 03-Feb-00 03-Feb-00 2.5yr
04-Jun-15 20-Dec-13
Sky coverage, taking overlaps into account
( ≥1ks exposure) 982sq.deg 877sq.deg 105sq.deg
Number of detections 678680 565962 112718
Number of 'clean' detections
(i.e., summary flag < 3) 552991 456904 96087
Number of unique sources 468440 396910 71530
Number of 'cleanest' (summary flag = 0,
not in high-background fields) extended
detections 11066 9082 1984
Number of detections with spectra 149968 133032 16936
Number of detections with timeseries 149968 133025 16943
Number of detections where probability
of timeseries being constant is
<1x10-5 5238 4668 570
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The production and content of the 3XMM catalogue is described in the
the 3XMM-DR6 User Guide at
http://xmmssc.irap.omp.eu/Catalogue/3XMM-DR6/3XMM-DR6_Catalogue_User_Guide.html
The "slim" version of the catalogue (file "xmm3r6s.dat") contains one
row per unique source, while the the main catalogue has one row per
detection. This slim version includes 44 columns, essentially those
containing information about the unique sources, while the full
catalogue (file "xmm3r6.fit") describes all detections with 323
columns. The slim version also contains a column with links to the
summary pages in the IRAP catalogue archive.
In the case of sources with multiple detections the summary page of
the best detection is selected (i.e., the detection with the largest
exposure time, summed over all cameras), and the summary page gives
cross-links to the other detections.
A separate file "summary.dat" contains the key details about the
observations used in the construction of the 3XMM-DR6 catalogue.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
xmm3r6s.dat 459 468440 The 3XMM-DR6 Catalog, "slim" version
summary.dat 135 9159 List of observations
xmm3r6.fit 2880 349530 Full 3XMM-DR6 Catalog (678680 detections)
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See also:
http://xmmssc-www.star.le.ac.uk/Catalogue : XMM-Newton Home Page
http://xmmssc.irap.omp.eu/Catalogue/3XMM-DR6/3XMM_DR6.html : 3XMM Home Page
http://xmmssc-www.star.le.ac.uk/ : XMM-Newton Survey Science Centre,
University of Leicester
http://xmm.vilspa.esa.es/ : XMM-Newton Science Operations Centre
http://xcatdb.u-strasbg.fr/xcat-db/ : XCAT-DB at SSC institute, Strasbourg
J/A+A/493/339 : XMM-Newton serendipitous Survey V. (Watson+, 2009)
B/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center)
Byte-by-byte Description of file: xmm3r6s.dat
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Bytes Format Units Label Explanations
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1- 15 I15 --- Source [200001101010001/207705805010122]
(SRCID) Unique source index
17- 20 A4 --- --- [3XMM]
22- 37 A16 --- 3XMM (IAUNAME) Unique source name (JHHMMSS.s+DDMMSS)
39- 47 F9.5 deg RAdeg (SC_RA) Mean source right ascension (ICRS)
49- 57 F9.5 deg DEdeg (SC_DEC) Mean source declination (ICRS)
59- 63 F5.2 arcsec ePos [0.03/20] (SC_POSERR) Mean error on position
65- 73 E9.3 --- srcML (SCDETML) Source detection likelihood (2)
75- 85 E11.5 mW/m2 Flux1 (SCEP1_FLUX) Mean flux in 0.2-0.5keV band
87- 95 E9.3 mW/m2 e_Flux1 (SCEP1FLUXERR) Mean error on Flux1
97-107 E11.5 mW/m2 Flux2 (SCEP2_FLUX) Mean flux in 0.5-1.0keV band
109-117 E9.3 mW/m2 e_Flux2 (SCEP2FLUXERR) Mean error on Flux2
119-129 E11.5 mW/m2 Flux3 (SCEP3_FLUX) Mean flux in 1.0-2.0keV band
131-139 E9.3 mW/m2 e_Flux3 (SCEP3FLUXERR) Mean error on Flux3
141-151 E11.5 mW/m2 Flux4 (SCEP4_FLUX) Mean flux in 2.0-4.5keV band
153-161 E9.3 mW/m2 e_Flux4 (SCEP4FLUXERR) Mean error on Flux4
163-173 E11.5 mW/m2 Flux5 (SCEP5_FLUX) Mean flux in 4.5-12keV band
175-183 E9.3 mW/m2 e_Flux5 (SCEP5FLUXERR) Mean error on Flux5
185-195 E11.5 mW/m2 Flux8 (SCEP8_FLUX) Mean flux in 0.2-12keV band
197-205 E9.3 mW/m2 e_Flux8 (SCEP8FLUXERR) Mean error on Flux8
207-217 E11.5 mW/m2 Flux9 ? (SCEP9_FLUX) Mean flux in 0.5-4.5keV band
219-227 E9.3 mW/m2 e_Flux9 ? (SCEP9FLUXERR) Mean error on Flux9
229-239 E11.5 mW/m2 F8min (SCEP8_FMIN) Minimum flux in 0.5-4.5keV band
241-249 E9.3 mW/m2 e_F8min (SCEP8FMINERR) Mean error on F8min
251-261 E11.5 mW/m2 F8max (SCEP8_FMAX) Maximum flux in 0.5-4.5keV band
263-271 E9.3 mW/m2 e_F8max (SCEP8FMAXERR) Mean error on F8max
273-278 F6.3 --- HR1 [-1/1]? (SC_HR1) Hardness ratio, bands 1,2 (1)
280-285 F6.3 --- e_HR1 ? (SCHR1ERR) Mean error on HR1
287-292 F6.3 --- HR2 [-1/1]? (SC_HR2) Hardness ratio, bands 2,3 (1)
294-299 F6.3 --- e_HR2 ? (SCHR2ERR) Mean error on HR2
301-306 F6.3 --- HR3 [-1/1]? (SC_HR3) Hardness ratio, bands 3,4 (1)
308-313 F6.3 --- e_HR3 ? (SCHR3ERR) Mean error on HR3
315-320 F6.3 --- HR4 [-1/1]? (SC_HR4) Hardness ratio, bands 4,5 (1)
322-327 F6.3 --- e_HR4 ? (SCHR4ERR) Mean error on HR4
329-333 F5.1 arcsec ext (SC_EXTENT) Total band extent
335-343 E9.3 --- extML (SCEXTML) Detection likelihood of the
extended source (3)
345-350 F6.3 --- Cst [0/1]? (SC_CHI2PROB) Constant probability (4)
352 I1 --- V [0/1] (SCVARFLAG) Variability flag (V=1)
354 I1 --- S [0/4] (SCSUMFLAG) summary flag, 0=best (5)
356-365 F10.4 d MJD0 [51577/57178] (MJD_FIRST) Date of first
observation (MJD)
367-376 F10.4 d MJD1 [51577/57178] (MJD_LAST) Date of last
observation (MJD)
378-387 F10.6 --- Fvar ? (SC_FVAR) fractional excess variance of
the unique source (6)
389-399 F11.6 --- e_Fvar ? (SC_FVARERR) Mean error on Fvar
401-402 I2 --- Nd [1/50] (N_DETECTIONS) Number of detections
404 I1 --- c [0/1] (CONFUSED) Confusion flag (7)
406-459 A54 --- uIRAP (WEBPAGE_URL) URL for details at IRAP
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Note (1): The hardness ratio is defined as (F2-F1)/(F2+F1)
if F2 is the flux in the harder band (the hardness ratio is
therefore -1 for softest sources and +1 for hardest sources).
The energy bands are:
1 = 0.2 - 0.5 keV (narrow band)
2 = 0.5 - 1.0 keV (narrow band)
3 = 1.0 - 2.0 keV (narrow band)
4 = 2.0 - 4.5 keV (narrow band)
5 = 4.5 - 12.0 keV (narrow band)
6 = 0.2 - 2.0 keV = soft broad band, no images made
7 = 2.0 - 12.0 keV = hard broad band, no images made
8 = 0.2 - 12.0 keV = total band
9 = 0.5 - 4.5 keV = XID band
Note (2): defined as the maximum of the likelihoods of all detections
of this source.
Note (3): defined as the average of the extent likelihoods of all
detections of this source.
Note (4): χ2 probability that the unique source as detected by
any of the observations is constant, that is, the minimum value
of the EPIC probabilities in each detection.
Note (5): the summary flag of the source is derived from the EPIC flag,
and is assigned the following values:
0 = good: none of the EPIC flags was set.
1 = source parameters may be affected: at least one of the EPIC warning
flags was set, but no possible-spurious detection flag is set.
2 = possibly spurious source: at least one of the possible-spurious
detection flags was set but not the manual flag
3 = source located in a area where spurious detection may occur.
4 = source located in a area where spurious detection may occur and is
possibly spurious.
Note (6): The fractional excess variance of the unique source. It is the
value corresponding to the exposure and instrument that shows the
lowest probability of being constant.
Note (7): This flag (1=true, 0=false) signifies that the 3-σ error
circle of a detection within this unique source overlaps the 3-σ
error circle of a nearby unique source. As such, it is an indicator of
possible confusion (uncertainty) about the assignment of detections
between sources.
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Byte-by-byte Description of file: summary.dat
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Bytes Format Units Label Explanations
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1- 4 I04 --- Rev [28/2836] (REVOLUT) Satellite revolution number
6- 15 I010 --- ObsID (OBS_ID) XMM Observation number (Cat. B/xmm)
17- 19 I03 --- iODF [1/10] (ODF_VERS) Data File (ODF) number
21- 29 F9.5 deg RAdeg (RA) field Right Ascension (J2000)
31- 39 F9.5 deg DEdeg (DEC) field Declination (J2000)
41- 68 A28 --- Target (TARGET) name
70 I1 --- Q [0/5] (OBS_CLASS) Observations quality (1)
72- 74 I3 --- Nd [1/731] (NDET) Number of detections in field
76- 78 I3 --- Ng [0/391] (NDETGOOD) Number of good detections
in field
80 I1 --- Np [1/4]? (PN_NEXP) Number of PN exposures merged
82- 84 A3 --- f.PN (PN_FILT) Filter of the PN exposure(s) (2)
86- 90 A5 --- m.PN (PN_MODE) Mode of the PN exposure(s) (3)
92- 97 I6 s t.PN ?=--- (PN_TEXP) Total PN exposure time
99 I1 --- N1 [1/5]? (M1_NEXP) Number of M1 exposures merged
101-103 A3 --- f.M1 (M1_FILT) Filter of the M1 exposure(s) (2)
105-109 A5 --- m.M1 (M1_MODE) Mode of the M1 exposures (3)
111-116 I6 s t.M1 ?=--- (M1_TEXP) Total M1 exposure time
118 I1 --- N2 [1/5]? (M2_NEXP) Number of M2 exposures merged
120-122 A3 --- f.M2 (M2_FILT) Filter of the M2 exposure(s) (2)
124-128 A5 --- m.M2 (M2_MODE) Mode of the M2 exposures (3)
130-135 I6 s t.M2 ?=--- (M2_TEXP) Total M2 exposure time
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Note (1): Quality classification of the whole observation based on the area
flagged as bad in the manual flagging process
Note (2): EPIC camera filters of catalogue observations:
Med=MEDIUM, Tn1=THIN1, Tn2=THIN2, Tck=THICK, Opn=OPEN,
Note (3): MOS modes:
PFW = Prime Full Window
PPW2 = Prime Partial W2
PPW3 = Prime Partial W3
PPW4 = Prime Partial W4
PPW5 = Prime Partial W5
FU = Fast Uncompressed
FC = Fast Compressed
PPRFS = Prime Partial Refreshed Frame Store
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History:
From http://xmmssc.irap.omp.eu/Catalogue/3XMM-DR6/3XMM_DR6.html
(End) Patricia Vannier [CDS] 22-Sep-2016